CN110156196A - The technique of recycling substance in a kind of extraction sewage - Google Patents
The technique of recycling substance in a kind of extraction sewage Download PDFInfo
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- CN110156196A CN110156196A CN201910575529.9A CN201910575529A CN110156196A CN 110156196 A CN110156196 A CN 110156196A CN 201910575529 A CN201910575529 A CN 201910575529A CN 110156196 A CN110156196 A CN 110156196A
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01C—AMMONIA; CYANOGEN; COMPOUNDS THEREOF
- C01C1/00—Ammonia; Compounds thereof
- C01C1/24—Sulfates of ammonium
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/38—Treatment of water, waste water, or sewage by centrifugal separation
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/44—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
- C02F1/441—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis by reverse osmosis
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/44—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
- C02F1/444—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis by ultrafiltration or microfiltration
-
- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05C—NITROGENOUS FERTILISERS
- C05C3/00—Fertilisers containing other salts of ammonia or ammonia itself, e.g. gas liquor
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K17/00—Soil-conditioning materials or soil-stabilising materials
- C09K17/02—Soil-conditioning materials or soil-stabilising materials containing inorganic compounds only
- C09K17/06—Calcium compounds, e.g. lime
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/10—Inorganic compounds
- C02F2101/16—Nitrogen compounds, e.g. ammonia
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/30—Organic compounds
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/08—Chemical Oxygen Demand [COD]; Biological Oxygen Demand [BOD]
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/10—Solids, e.g. total solids [TS], total suspended solids [TSS] or volatile solids [VS]
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/14—NH3-N
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P60/00—Technologies relating to agriculture, livestock or agroalimentary industries
- Y02P60/20—Reduction of greenhouse gas [GHG] emissions in agriculture, e.g. CO2
- Y02P60/21—Dinitrogen oxide [N2O], e.g. using aquaponics, hydroponics or efficiency measures
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Hydrology & Water Resources (AREA)
- Inorganic Chemistry (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Soil Sciences (AREA)
- Materials Engineering (AREA)
- Analytical Chemistry (AREA)
- Mechanical Engineering (AREA)
- Separation Using Semi-Permeable Membranes (AREA)
Abstract
The invention discloses a kind of techniques of recycling substance in extraction sewage, it is related to sewage treatment field, the present invention passes through reduction, separate the suspended solid in treatment sewage, ultrafiltration is carried out to the sewage for reducing suspended solids content, separate it is reverse osmosis after obtain high cod values, the ammonia nitrogen retentate of high TDS value, it adds after calcium oxide is alkalized and is connected to decanting device, two outlets of the decanting device alkalization of discharge liquid four is formed respectively white lime removing sediment and liquid five, liquid five is led into scrubbing tower again, sulfuric acid is added in scrubbing tower and liquid five forms ammonium sulfate, simultaneously, white lime removing sediment is connected to the second whizzer by processing pipeline three and isolates white lime, improve the efficiency of the second whizzer work, and the present invention is realized and is extracted from sewage using substance, It for various soil and the fertilizer of crop, soil conditioner, reduces resource waste, saves a large amount of economic cost, reduce earth's surface pollution.
Description
Technical field
The present invention relates to sewage treatment fields, and in particular to a kind of technique for extracting recycling substance in sewage.
Background technique
In recent years, with the development of social all trades and professions, water pollution issue is also brought, is contained in sewage highly concentrated organic
Object, COD, TDS ammonia nitrogen, it is necessary to could be discharged by processing, avoid pollution environment, but in the prior art about the work of sewage treatment
Skill mainly from sewage extract ammonia nitrogen reach the position of discharge standard, and ignore in sewage there are still it is some can benefit
With substance, recycling may be processed, not only reduce disposal of pollutants, but also can make refuse reclamation, save economic cost, therefore,
It is badly in need of developing a kind of technique realized and extract working substance from sewage.
Summary of the invention
The purpose of the present invention is to provide a kind of technique of recycling substance in extraction sewage, solution is closed in the prior art
Ammonia nitrogen is mainly extracted from sewage in the technique of sewage treatment and reaches the position of discharge standard, and is ignored in sewage still
So exist it is some may be processed recycling using substance, not only reduce disposal of pollutants, but also refuse reclamation can be made, save
The defect of economic cost.
The technique of recycling substance in a kind of extraction sewage, comprising the following steps:
Step 1: reducing the suspended solid in treatment sewage, there is the sewage for reducing suspended solids content to obtain,
Treatment sewage is connected to the device of separable suspended solid by pipeline one, it is solid that suspension has been reduced after device is handled
The liquid one of body content；
Step 2: ultrafiltration is carried out by the liquid one that will reduce suspended solids content, to obtain substantially free of suspension
Or the penetrant of precipitation solid, liquid one is connected to ultra filtration unit by pipeline two, is obtained after ultra filtration unit is handled basic
The upper liquid two without suspension or precipitation solid, the ultra filtration unit includes the first ultrafiltration mould connected by intermediate transfer conduit
Block and the second ultrafiltration module, the film surface of the first ultrafiltration module micropore screening can molecular cut off in 100 kilodaltons
To between 400 kilodaltons, the micropore screening of the film surface of the second ultrafiltration module can molecular cut off 2 kilodaltons extremely
Between 20 kilodaltons；
Step 3: liquid two-way piping three is connected to separation reverse osmosis unit, by separation reverse osmosis unit processing
Liquid threeway piping four is connected in collecting tank by the ammonia nitrogen retentate for obtaining liquid three and high cod values, high TDS value afterwards；
Step 4: the ammonia nitrogen retentate of high cod values, high TDS value in step 3 is discharged into holding vessel by flowing out pipeline
In, calcium oxide is added in holding vessel and alkalizes to obtain liquid four, the pH value of the liquid four is 11-12.5；
Step 5: decanting device is connected to by handling pipeline one in the exit of holding vessel, the two of the decanting device
A outlet alkalization of discharge liquid four is formed respectively white lime removing sediment and liquid five；
Step 6: liquid five is led to scrubbing tower by handling pipeline two, sulfuric acid is added in scrubbing tower, with five shape of liquid
At ammonium sulfate.
Preferably, in step 2 the second ultrafiltration module filtrate outlet discharge be substantially free of suspend or precipitating
Solid still has the substance of high COD, it is connected in holding vessel by release catheter.
Preferably, in step 1, described device include pass through pipeline connection and can separate 50% suspended solid first
Separator and the second whizzer for being further reduced suspended solid.
Preferably, in step 2, the screening of the micropore of the film surface of the first ultrafiltration module can molecular cut off 150,000
Dalton between 250 kilodaltons, the micropore screening of the film surface of the second ultrafiltration module can molecular cut off 5,000
Er Dun is between 15 kilodaltons.
Preferably, in step 2, the ultrafiltration membrane material of the first ultrafiltration module is silicon carbide.
Preferably, the pH value of the liquid four is 11.5-12.
Preferably, white lime removes sediment and is connected to entering for the second whizzer by handling pipeline three in step 5
Mouthful, white lime can be isolated by the second whizzer.
Preferably, ammonium sulfate concentrations are 25%-30% in step 6.
The present invention has the advantages that the present invention is by reducing the suspended solid in treatment sewage, separating hanging in sewage
Floating solid carries out the sewage for reducing suspended solids content to obtain the ammonia of high cod values, high TDS value after ultrafiltration, separation are reverse osmosis
Nitrogen retentate adds after calcium oxide after alkalizing and is connected to decanting device, and discharge liquor is distinguished in two outlets of the decanting device
The white lime removing sediment and liquid five that the alkalization of body four is formed, then liquid five is led into scrubbing tower by handling pipeline two,
Sulfuric acid is added in scrubbing tower, forms ammonium sulfate with liquid five, and ammonium sulfate is suitable for the fertilizer of various soil and crop,
Meanwhile white lime removing sediment is connected to the entrance of the second whizzer by handling pipeline three, can by second from
Centrifugal separator isolates white lime, and white lime can be used as soil conditioner, due to white lime and so-called " flocculant ",
Therefore its addition improves the second whizzer work efficiency, therefore, the present invention realize be extracted from sewage can benefit
It is reduced resource waste with substance for various soil and the fertilizer of crop, soil conditioner, saves a large amount of economic cost,
Reduce earth's surface pollution.
Detailed description of the invention
Fig. 1 is process drawing of the invention.
Wherein, 2a- pipeline one, 2- device, 2b- pipeline two, 4- ultra filtration unit, 4c- intermediate transfer conduit, 4a- the first surpass
Filter module, 4b- the second ultrafiltration module, 5- pipeline three, 6b- release catheter, 7- separation reverse osmosis unit, 8- pipeline four, 9- outflow
Pipeline, 10- collecting tank, the first separator of 12a-, the second whizzer of 12b-, 15- holding vessel, 16- handle pipeline one, 17-
Scrubbing tower, 18- decanting device, 19- handle pipeline two, and 20- handles pipeline three.
Specific embodiment
To be easy to understand the technical means, the creative features, the aims and the efficiencies achieved by the present invention, below with reference to
Specific embodiment, the present invention is further explained.
As shown in Figure 1, a kind of technique for extracting recycling substance in sewage, comprising the following steps:
Step 1: reducing the suspended solid in treatment sewage, there is the sewage for reducing suspended solids content to obtain,
Treatment sewage is connected to the device 2 of separable suspended solid by one 2a of pipeline, has been reduced after the processing of device 2 outstanding
The liquid one of floating solid content；
Step 2: ultrafiltration is carried out by the liquid one that will reduce suspended solids content, to obtain substantially free of suspension
Or the penetrant of precipitation solid, liquid one is connected to ultra filtration unit 4 by two 2b of pipeline, is obtained after the processing of ultra filtration unit 4
Substantially free of suspending or the liquid two of precipitation solid, the ultra filtration unit 4 include the by the 4c connection of intermediate transfer conduit
The micropore screening of one ultrafiltration module 4a and the second ultrafiltration module 4b, the film surface of the first ultrafiltration module 4a can molecular cut offs
In 100 kilodaltons between 400 kilodaltons, the micropore screening of the film surface of the second ultrafiltration module 4b can retain molecule
Amount is in 2 kilodaltons between 20 kilodaltons；
Step 3: liquid two-way piping 35 is connected to separation reverse osmosis unit 7, at separation reverse osmosis unit 7
Liquid threeway piping 48 is connected to collecting tank 10 by the ammonia nitrogen retentate that liquid three and high cod values, high TDS value are obtained after reason
In；
Step 4: the ammonia nitrogen retentate of high cod values, high TDS value in step 3 is discharged into holding vessel by flowing out pipeline 9
In 15, calcium oxide is added in holding vessel 15 and alkalizes to obtain liquid four, the pH value of the liquid four is 11-12.5；
Step 5: being connected to decanting device 18, the decantation dress by handling pipeline 1 in the exit of holding vessel 15
Set 18 two outlets alkalization of discharge liquid four is formed respectively white lime removing sediment and liquid five；
Step 6: liquid five is led to scrubbing tower 17 by handling pipeline 2 19, sulfuric acid is added in scrubbing tower 17, with liquid
Body five forms ammonium sulfate.
In the present embodiment, the filtrate outlet discharge of the second ultrafiltration module 4b is substantially free of outstanding in step 2
Floating or precipitation solid still has the substance of high COD, it is connected in holding vessel 15 by release catheter 6b.In step 1,
Described device 2 include pass through pipeline connection and can separate 50% suspended solid the first separator 12a and be further reduced it is outstanding
Second whizzer 12b of floating solid.In step 2, the micropore screening of the film surface of the first ultrafiltration module 4a can be retained
In 150 kilodaltons between 250 kilodaltons, the micropore screening of the film surface of the second ultrafiltration module 4b can be cut molecular weight
Stay molecular weight in 5 kilodaltons between 15 kilodaltons.
In addition, the ultrafiltration membrane material of the first ultrafiltration module 4a is silicon carbide in step 2.The pH value of the liquid four
For 11.5-12.White lime removing sediment is connected to entering for the second whizzer 12b by handling pipeline 3 20 in step 5
Mouthful, white lime can be isolated by the second whizzer 12b.Ammonium sulfate concentrations are 25%-30% in step 6.
Based on above-mentioned, the present invention is by reducing the suspended solid in the treatment sewage, suspended solid in separation sewage, right
Reduce suspended solids content sewage carry out ultrafiltration, separation it is reverse osmosis after obtain the ammonia nitrogen retentate of high cod values, high TDS value,
It adds after calcium oxide after alkalizing and is connected to decanting device 18, four alkali of liquid is discharged in two outlets of the decanting device 18 respectively
Change the white lime removing sediment and liquid five formed, then liquid five is led into scrubbing tower 17 by handling pipeline 2 19,
Sulfuric acid is added in scrubbing tower 17, forms ammonium sulfate with liquid five, and ammonium sulfate is suitable for the fertilizer of various soil and crop,
Meanwhile white lime removing sediment is connected to the entrance of the second whizzer 12b by handling pipeline 3 20, it can be by the
Two whizzer 12b isolate white lime, and white lime can be used as soil conditioner, due to white lime and so-called
" flocculant ", therefore its addition improves the efficiency of the second whizzer 12b work, therefore, the present invention is realized from sewage
In be extracted using substance, for various soil and the fertilizer of crop, soil conditioner, reduce resource waste, save big
The economic cost of amount reduces earth's surface pollution.
As known by the technical knowledge, the present invention can pass through the embodiment party of other essence without departing from its spirit or essential feature
Case is realized.Therefore, embodiment disclosed above, in all respects are merely illustrative, not the only.Institute
Have within the scope of the present invention or is included in the invention in the change being equal in the scope of the present invention.
Claims (8)
1. a kind of technique for extracting recycling substance in sewage, it is characterised in that: the following steps are included:
Step 1: reducing the suspended solid in treatment sewage, the sewage of suspended solids content is reduced to obtain to have, it will be to
Processing sewage is connected to the device (2) of separable suspended solid by pipeline one (2a), is reduced after device (2) processing
The liquid one of suspended solids content；
Step 2: ultrafiltration is carried out by the liquid one that will reduce suspended solids content, to obtain substantially free of suspension or sink
Liquid one is connected to ultra filtration unit (4) by pipeline two (2b) by the penetrant of shallow lake solid, after ultra filtration unit (4) processing
To the liquid two substantially free of suspension or precipitation solid, the ultra filtration unit (4) includes being connected by intermediate transfer conduit (4c)
The the first ultrafiltration module (4a) and the second ultrafiltration module (4b) connect, the micropore screening of the film surface of the first ultrafiltration module (4a)
Can molecular cut off in 100 kilodaltons between 400 kilodaltons, the micropore of the film surface of the second ultrafiltration module (4b)
Screening can molecular cut off in 2 kilodaltons between 20 kilodaltons；
Step 3: liquid two-way piping three (5) is connected to separation reverse osmosis unit (7), by separating reverse osmosis unit (7)
Liquid threeway piping four (8) is connected to collection by the ammonia nitrogen retentate that liquid three and high cod values, high TDS value are obtained after processing
In tank (10)；
Step 4: the ammonia nitrogen retentate of high cod values, high TDS value in step 3 is discharged into holding vessel by flowing out pipeline (9)
(15) in, calcium oxide is added in holding vessel (15) and alkalizes to obtain liquid four, the pH value of the liquid four is 11-12.5；
Step 5: being connected to decanting device (18), the decantation by handling pipeline one (16) in the exit of holding vessel (15)
Two outlets of device (18) alkalization of discharge liquid four is formed respectively white lime removing sediment and liquid five；
Step 6: liquid five is led to scrubbing tower (17) by handling pipeline two (19), sulfuric acid is added in scrubbing tower (17), with
Liquid five forms ammonium sulfate.
2. a kind of technique for extracting recycling substance in sewage according to claim 1, which is characterized in that in step 2
The filtrate outlet discharge of second ultrafiltration module (4b) is substantially free of suspension or precipitation solid but has high COD
It is connected in holding vessel (15) by substance by release catheter (6b).
3. a kind of technique for extracting recycling substance in sewage according to claim 1, it is characterised in that: step 1
In, described device (2) includes passing through pipeline connection and capable of separating 50% the first separator (12a) of suspended solid and further
Reduce the second whizzer (12b) of suspended solid.
4. a kind of technique for extracting recycling substance in sewage according to claim 1, it is characterised in that: step 2
In, the screening of the micropore of the film surface of the first ultrafiltration module (4a) can molecular cut off in 150 kilodaltons to 250,000 dongles
Between, the screening of the micropore of the film surface of the second ultrafiltration module (4b) can molecular cut off in 5 kilodaltons to 15,000
Between you pause.
5. a kind of technique for extracting recycling substance in sewage according to claim 1, it is characterised in that: step 2
In, the ultrafiltration membrane material of the first ultrafiltration module (4a) is silicon carbide.
6. a kind of technique for extracting recycling substance in sewage according to claim 1, it is characterised in that: the liquid
Four pH value is 11.5-12.
7. a kind of technique for extracting recycling substance in sewage according to claim 3, it is characterised in that: in step 5
The entrance that white lime removing sediment is connected to the second whizzer (12b) by handling pipeline three (20), can pass through second
Whizzer (12b) isolates white lime.
8. a kind of technique for extracting recycling substance in sewage according to claim 1, it is characterised in that: in step 6
Ammonium sulfate concentrations are 25%-30%.
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| CN201910575529.9A CN110156196A (en) | 2019-06-28 | 2019-06-28 | The technique of recycling substance in a kind of extraction sewage |
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